14,000 kms divided by 31 years= the car has most likely sat for an entire decade at some point between meaningful drive time... 81/82 Monte's are less desirable than the later years, the motor running in tip top stock shape could probably keep up with a 305/307...
If it is completely rust free, motor runs good, transmission shifts, interior is near mint, body is straight & dent free, & it's Exactly what you are looking for????
I would say top dollar in the current market is $5,000-$7,000....and it would have to be absolutely mint! The super Low miles are offset by the fact that it is not a very desirable/collectable model/year...
I mean no disrespect at all, It would be a cool car to own & I Test drove a decent 81 turbo Monte over a decade ago & almost bought it for $900...
I am not in the market, just like looking, & I've seen hundreds of g.bodies that are better deals just this month web searching craigslists all across the country...